A cold front moves through Maine Thursday, bringing a chance for showers in some areas. Behind the front, high pressure works in for Friday and Saturday. A frontal boundary enhanced by an upper level low interacts with the remnants of Harvey on Sunday. A weak upper level trough works through the mountains and northern areas Monday. Weak high pressure passes through Monday night into early Tuesday. Another cold front bears down on the state late Tuesday into Wednesday.
First, two important items of regional interest were discussed on the Pine Tree Weather Facebook page today:
Tropical Storm Irma forms off the Cape Verde Islands
Please take a minute and read both of these entries.
Now, onto the forecast.
Thursday
Down East areas may start off with fog, which will burn off by around mid-morning.
A cold front approaches the state during the day. Best chance for showers appears over the north and mountains, with an isolated chance over eastern areas. Southern areas appear to remain dry.
After the frontal passage, a breeze picks up out of the northwest, which may gust around 25 mph in some areas in the afternoon. The wind continues overnight into Friday.
Friday / Saturday
The sky appears mainly sunny to start off the day. The air appears to have a fall-like crispness as breezy conditions continue. Temperatures may to struggle to reach 50° in the St. John River Valley. The mid-60s in far southern areas is about as high on the mercury as the state will get.
The breeze subsides Friday night as high pressure settles in. The mountains and north country, as well as well protected areas may risk frost Saturday morning.
Saturday is the pick of the weekend as the sky appears mainly sunny with warmer conditions.
Sunday
Rain is in the forecast statewide. The question remains on how long and how much. Remnants of Harvey interact with a frontal boundary moving southeast from Quebec. Timing will dictate whether it will be showers with heavier rain offshore, or if more of the heavier rain affects the coast, and possibly further inland. For now, plan on it being a wet one, with more details to come.
On a side note, guidance is indicating the chance for tropical development near the Yucatan Peninsula Sunday into Monday. While just a model idea at this point, there is potential impacts possible to the Gulf Coast region affected by Harvey. The National Hurricane Center has flagged the area to watch.
Monday / Tuesday / Wednesday
Most of the state sees a dry day for Labor Day outside of the Crown and High Peaks region as weak trough may touch off a few scattered showers, ending early in the afternoon.
A cold front approaches the state on Tuesday. The day appears to start off mainly dry, with showers breaking out over the mountains and north around mid-morning and will move southeast during the day. Guidance is conflicted with what happens from there. There is potential for the front to stall along the coast, with rain continuing into Wednesday.
7-Day Outlook – Mountains / North
7-Day Outlook – South / East
-Mike Haggett
For official forecast information: please check in with National Weather Service Gray for Western & Southern Maine and National Weather Service Caribou for Eastern & Northern Maine.
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Special thanks to Tropical Tidbits and Pivotal Weather for their written permission to use their graphics in this post. Use of WeatherTAP images used within their written permitted terms of media use policy. Additional forecast information supplied by the National Weather Service, WeatherBELL Analytics and AccuWeather Professional.
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